<html>
<body>
<form name="filtro" method="post" action="">
<table bgcolor="#DDDDDD" cellpadding="0" cellspacing="0">
	<tr>
		<td>
			
		</td>
	</tr>
	<tr>
		<td>
			<select name="filtro_examen">
				<option>Seleccione Examen</option>
				<option>Examen Habilitante</option>
				<option>Examen de Grado</option>
				<option>Examen Tradicional</option>
			</select>
		</td>
		<td>
			<input type="text" id='filtro_rut' name="filtro_rut" size="30px">
		</td>
		<td>
			<div onClick="BuscarRegistrosAlumnos();">boton</div>
		</td>
	</tr>
</table>
</form>
</body>
</html>